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LEGEND
AL
— Alarm Relay
AWG
— American Wire Gage
CPM
— Condensate Pump
CW
— Chilled Water
HTR
— Hot Water Relay
HW
— Hot Water
Fig. 32 — 42WKN Unit 4-Pipe System with Hot Water Coil and Electro-Mechanical Control Wiring Diagram,
NOTE: Fan is wired to medium speed as a default. To change the default
fan speed, adjust wiring in the field. Factory-provided electro-mechanical
thermostats are for single speed fan operation only.
Factory-Installed
Field-Installed
1
Terminal Block
Component Terminal
Connected Path
Sizes 08 and 12
A42-4334
28
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